Hi Sherryleb79,
The first place I would start your research is the tutorial post here which has all the basic information, steps, and guidelines that can help you make the best possible choices … and learn how and why to avoid the worst ones (including both of the manufacturers you mentioned).
I would keep in mind that a mattress that works well for one person may be completely unsuitable for someone else to sleep on which is why I would take specific suggestions from friends (who may know very little about the quality of a mattress) or online reviews with a big grain of salt (see post #13 here). The goal of a mattress purchase is to find a mattress that is the best match for you regardless of how well it works for someone else. I would also make sure you know the quality of the materials inside any mattress you consider so you can identify any weak links and make meaningful comparisons with other mattresses. No matter how a mattress feels and performs initially … if it uses lower quality materials that will soften, compress, or break down too quickly relative to the price you paid (which can sometimes happen in only a few years and in some cases only a few months) then there would be little value in buying it.
You can read my thoughts about airbeds in this article.
If you let me know your city or zip code I’d be happy to let you know of any of the better options or possibilities I’m aware of in your area and the tutorial post also includes links to some of the better online options I’m aware of as well if you are comfortable looking in that direction.
Phoenix